Severe Thunderstorm Warning 82, NWS Birmingham, AL

293 
WWUS54 KBMX 050922
SVSBMX

Severe Weather Statement
National Weather Service Birmingham AL
422 AM CDT WED APR 5 2017

ALC105-050931-
/O.CAN.KBMX.SV.W.0082.000000T0000Z-170405T1000Z/
Perry AL-
422 AM CDT WED APR 5 2017

...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN PERRY COUNTY IS
CANCELLED...
    
The severe thunderstorm which prompted the warning has moved out of 
the warned area.  Therefore, the warning has been cancelled.

A severe thunderstorm watch remains in effect until 800 AM CDT for
Alabama.

LAT...LON 3316 8700 3316 8697 3310 8697 3310 8695
      3308 8695 3308 8693 3306 8693 3305 8688
      3298 8688 3283 8710 3283 8729 3284 8732
      3288 8732
TIME...MOT...LOC 0921Z 229DEG 43KT 3291 8717 

$$

ALC007-051000-
/O.CON.KBMX.SV.W.0082.000000T0000Z-170405T1000Z/
Bibb AL-
422 AM CDT WED APR 5 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 500 AM CDT
FOR EASTERN BIBB COUNTY...

At 421 AM CDT, a severe thunderstorm was located over Brent, moving
northeast at 50 mph.

HAZARD...60 mph wind gusts and half dollar size hail. 

SOURCE...Radar indicated. 

IMPACT...Hail damage to vehicles is expected. Expect wind damage to 
         roofs, siding, and trees. 

Locations impacted include...
Brent, Centreville, Ashby, Brierfield Ironworks Park, West
Centreville, Trio, Marvel, Six Mile and Bibb County Airport.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 3316 8700 3316 8697 3310 8697 3310 8695
      3308 8695 3308 8693 3306 8693 3305 8688
      3298 8688 3283 8710 3283 8729 3284 8732
      3288 8732
TIME...MOT...LOC 0921Z 229DEG 43KT 3291 8717 

HAIL...1.25IN
WIND...60MPH
 
$$

87/GRANTHAM

138 
WWUS54 KBMX 050928 RRA
SVSBMX

Severe Weather Statement
National Weather Service Birmingham AL
428 AM CDT WED APR 5 2017

ALC007-051000-
/O.CON.KBMX.SV.W.0082.000000T0000Z-170405T1000Z/
Bibb AL-
428 AM CDT WED APR 5 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 500 AM CDT
FOR EASTERN BIBB COUNTY...

At 428 AM CDT, a severe thunderstorm was located over Centreville,
moving northeast at 50 mph.

HAZARD...60 mph wind gusts and half dollar size hail. 

SOURCE...Radar indicated. 

IMPACT...Hail damage to vehicles is expected. Expect wind damage to 
         roofs, siding, and trees. 

Locations impacted include...
Brent, Centreville, Ashby, Brierfield Ironworks Park, West
Centreville, Trio, Marvel, Six Mile and Bibb County Airport.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 3284 8709 3296 8722 3316 8700 3316 8697
      3310 8697 3310 8695 3308 8695 3308 8693
      3306 8693 3305 8688 3298 8688 3286 8705
TIME...MOT...LOC 0928Z 229DEG 41KT 3296 8710 

HAIL...1.25IN
WIND...60MPH
 
$$

87/GRANTHAM

974 
WWUS54 KBMX 050940
SVSBMX

Severe Weather Statement
National Weather Service Birmingham AL
440 AM CDT WED APR 5 2017

ALC007-051000-
/O.CON.KBMX.SV.W.0082.000000T0000Z-170405T1000Z/
Bibb AL-
440 AM CDT WED APR 5 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 500 AM CDT
FOR SOUTHEASTERN BIBB COUNTY...

At 440 AM CDT, a severe thunderstorm was located near Ashby, or 8
miles east of Centreville, moving northeast at 45 mph.

HAZARD...60 mph wind gusts and half dollar size hail. 

SOURCE...Radar indicated. 

IMPACT...Hail damage to vehicles is expected. Expect wind damage to 
         roofs, siding, and trees. 

Locations impacted include...
Centreville, Brierfield Ironworks Park, Ashby, Trio, Six Mile and
Bibb County Airport.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 3287 8703 3299 8714 3314 8697 3310 8697
      3310 8695 3308 8695 3308 8693 3306 8693
      3305 8688 3298 8688
TIME...MOT...LOC 0940Z 231DEG 39KT 3301 8699 

HAIL...1.25IN
WIND...60MPH
 
$$

87/GRANTHAM

338 
WWUS54 KBMX 050948
SVSBMX

Severe Weather Statement
National Weather Service Birmingham AL
448 AM CDT WED APR 5 2017

ALC007-051000-
/O.CON.KBMX.SV.W.0082.000000T0000Z-170405T1000Z/
Bibb AL-
448 AM CDT WED APR 5 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 500 AM CDT
FOR EAST CENTRAL BIBB COUNTY...

At 448 AM CDT, a severe thunderstorm was located over Brierfield
Ironworks Park, or near Montevallo, moving northeast at 45 mph.

HAZARD...60 mph wind gusts and half dollar size hail. 

SOURCE...Radar indicated. 

IMPACT...Hail damage to vehicles is expected. Expect wind damage to 
         roofs, siding, and trees. 

Locations impacted include...
Brierfield Ironworks Park and Ashby. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 3308 8702 3311 8697 3310 8697 3310 8695
      3308 8695 3308 8693 3306 8693 3305 8688
      3298 8688 3294 8693
TIME...MOT...LOC 0948Z 241DEG 38KT 3304 8690 

HAIL...1.25IN
WIND...60MPH
 
$$

87/GRANTHAM

Area Forecast Discussion
National Weather Service Birmingham AL
146 AM CDT Wed Apr 5 2017

.UPDATE...
MESOSCALE UPDATE.

&&

.DISCUSSION...

A warm front is accelerating northward in far South Alabama this
morning, which has caused elevated supercell development.  This
activity will spread northward through the pre-dawn hours. Hi-res
model guidance does not have a good handle on the current
convective  situation, so it is difficult to know how this will
evolve through the rest of the morning. Complicating matters is
the presence of a subtle upper-level subtropical disturbance which
seems likely to cause early day warm sector contamination and the
development of a low-level jet impulse. The overall consensus is
for additional development through the late morning generally
along and east of a line from Demopolis to Gadsden and especially
across our southeast counties. The primary threat will probably be
large hail through 8 AM, though a tornado or two cannot be ruled
out. The warm sector should be established across most of the area
shortly after 8 AM when additional thunderstorm development is
likely in the areas previously mentioned. This is also when the
tornado threat will increase as a 40kt southwesterly low-level jet
becomes established, leading to 0-1 km SRH of 150-200 m2/s2. This
is normally not high enough for tornadoes in Alabama, but MLCAPE
values approaching 3000 J/kg should help offset the lackluster
low-level directional shear. This batch of storms will probably
exit into Georgia around Noon or 1 PM, leaving being somewhat
cooler air across East AL and West GA which may play a crucial
role in tornado potential later in the afternoon.

Another round of severe storms should initiate around 3-4 PM
along the cold front from Northwest AL southward to around
Demopolis. These storms should become severe with large hail as a
powerful 500 mb jet streak closes in on the area with 65-80 kt
flow across the warm sector. Initially the tornado threat with
these storms may be tempered by less than ideal low-level
directional shear, but this could change especially east of
Interstate 65. If the morning thunderstorm activity leaves behind
a substantial temperature gradient, significant backing of low-
level flow would be present, causing hodographs to become
enlarged. This type of mesoscale enhancement is difficult to
predict, but if it occurs, the threat for destructive, long-track
tornadoes will increase substantially as storms approach the AL/GA
state line around 6-8 PM.

87/Grantham

&&

.AVIATION...
06Z TAF Discussion.

Some big and rather fast changes take place in the first 6 hours.
The main change from the previous issuance was to slow the
increasing clouds by an hour or so. Warm air advection pattern
and low level jet kick between 06-09z with ceilings quickly
dropping to MVFR then IFR between 10-12z. The clouds will be
associated with a warm front and much increased moisture from the
south. Showers and thunderstorms will also develop with this
gradient of moisture around sunrise. Some improvement to all
ceilings expected by 16-18z as ceilings rise somewhat, but
additional showers and thunderstorms are possible through 00z area
wide. Low level winds will be in the neighborhood of 35-38kts
overnight, which is close but just shy of the LLWS criteria.

A volatile atmosphere will be in place across Central Alabama on
Wednesday and any of these storms may produce damaging winds,
tornadoes, and large hail.

75

&&

.FIRE WEATHER...

A storm system will bring rain and thunderstorms to the area
through tonight. Rain-free weather returns Thursday through the
weekend. Critical fire weather conditions are not expected through
the next 7 days.

&&

.BMX WATCHES/WARNINGS/ADVISORIES/...
None.

&&

Hazardous Weather Outlook
National Weather Service Birmingham AL
120 PM CDT Tue Apr 4 2017

ALZ011>015-017>050-052130-
Marion-Lamar-Fayette-Winston-Walker-Blount-Etowah-Calhoun-Cherokee-
Cleburne-Pickens-Tuscaloosa-Jefferson-Shelby-St. Clair-Talladega-
Clay-Randolph-Sumter-Greene-Hale-Perry-Bibb-Chilton-Coosa-Tallapoosa-
Chambers-Marengo-Dallas-Autauga-Lowndes-Elmore-Montgomery-Macon-
Bullock-Lee-Russell-Pike-Barbour-
120 PM CDT Tue Apr 4 2017

This Hazardous Weather Outlook is for the counties served by the
National Weather Service office in Birmingham.

.DAY ONE...This Afternoon and Tonight.

Severe thunderstorms may develop as early as 4 AM Wednesday and
could affect all of Central Alabama. Large hail, damaging winds, and
tornadoes will be possible.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

The severe weather threat beginning in the pre-dawn hours of
Wednesday will continue through Wednesday evening with the
possibility of two or three rounds of scattered storms. Destructive
and long-track tornadoes will be possible, along with hail up to the
size of baseballs, and damaging straight-line winds. These threats
will encompass all of Central Alabama with the greatest threat area
along and east of a line from Blountsville to West Blocton to
Uniontown.

.SPOTTER INFORMATION STATEMENT...

Activation of storm spotters and emergency management is expected
from early Wednesday morning through Wednesday evening.

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
222 AM CDT WED APR 5 2017

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0215 AM     HAIL             EUFAULA                 31.90N 85.15W
04/05/2017  E1.00 INCH       BARBOUR            AL   EMERGENCY MNGR

            QUARTER SIZE HAIL IN DOWNTOWN EUFAULA.

&&

DAVIS

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
227 AM CDT WED APR 5 2017

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0215 AM     HAIL             EUFAULA                 31.90N 85.15W
04/05/2017  E1.25 INCH       BARBOUR            AL   BROADCAST MEDIA

            RELAYED FROM A VIEWER.

&&

DAVIS

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
242 AM CDT WED APR 5 2017

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0226 AM     HAIL             1 N CLAYTON             31.89N 85.45W
04/05/2017  E2.00 INCH       BARBOUR            AL   EMERGENCY MNGR

&&

DAVIS

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
246 AM CDT WED APR 5 2017

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0226 AM     HAIL             1 N CLAYTON             31.89N 85.45W
04/05/2017  M2.50 INCH       BARBOUR            AL   EMERGENCY MNGR

            CORRECTED REPORT. HAIL WAS MEASURED AT 2.5
            INCHES.

&&

DAVIS

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
359 AM CDT WED APR 5 2017

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0348 AM     HAIL             LADONIA                 32.46N 85.09W
04/05/2017  E1.75 INCH       RUSSELL            AL   BROADCAST MEDIA

            GOLF BALL SIZE HAIL REPORTED IN LADONIA.

&&

DAVIS